2.7MHz OSCILLATOR IS NOW INCLUDED TO REPLACE
THE INTERNAL VFO.
With the VFO 1000, tuning SSB is a
snap. Most hams operate on even 1KHz
frequencies. So using the 1KHz tuning step, SSB
signals are received without careful tuning as
required with analog tuning. Usually no tweaking
is required. Use the 5KHz tuning step when
tuning shortwave broadcast.The VFO 1000/Collins is a
direct digital synthesizer programmed to enhance the
operation of Collins S-Line receivers. There are
30 tunable memories that are programmed to provide the
functions of VFO, MEMORIES, and GENERAL COVERAGE
reception. The first 6 memories are factory assigned
for the 80 meter to 10 meter ham bands. The remaining
bands are assigned to provide general coverage of the
shortwave bands. They can be easily user re-assigned
in any way you wish up to 30MHz. Some memories
could be your favorite net frequencies, others could
be used for general coverage of the shortwave
broadcast bands. The encoder has 5KHz, 1KHz,
100Hz, and 10Hz tuning steps. The encoder can be
locked to prevent accidental changes. An
LED indicates when the encoder is active. There
is a 50KHz step available in the setup mode to
speed-up frequency entry. The
LCD is blue backlite with white characters. No
mods to the receiver are required.
GIVES COMPLETE CONTROL OF FREQ, ACCURACY,
& STABILITY TO THE VFO 1000.
SWITCH IS INCLUDED TO SWITCH BACK TO THE
RECEIVER'S INTERNAL VFO IF DESIRED.
IS BY SLIPPING AN EYELET WITH A WIRE
ATTACHED OVER PIN 1 OF THE PTO TUBE.
If you prefer traditional Collins tuning, switch the
2.7MHz oscillator OFF and set the VFO display to the
low end of the desired 200KHz segment, then tune
using the receiver tuning knob. The operating
frequency in this case is the VFO display plus the
receiver dial. The tuning knob on the VFO can be
disabled to prevent accidental changes.
Installation of the VFO 1000 is by removing the 6U8 HF
oscillator tube, inserting the included adapter in the
socket, then insert the 6U8 in the adapter. A
cable goes from the adapter to the main unit. A
switch on the adapter switches between the ham band
crystals and the shortwave unit.